Let's start with a bold statement: Cloud-based enterprise software and its subscription-based economic model will force IT services firms to change their business models.

The rapid growth of the Software as a Service (SaaS) cloud delivery model has exposed a painful reality: consulting firms, VARs and system integrators have been dodging any form of real accountability for business outcomes, empowered by their business model which depends on monetizing the time and effort of experts. Shielded by the almighty billable hour and its close cousin the "change request", consultants simply haven't had to worry much a...

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